23121442221401 has 16 divisors (see below), whose sum is σ = 24862097729664. Its totient is φ = 21425514841344.

The previous prime is 23121442221359. The next prime is 23121442221403. The reversal of 23121442221401 is 10412224412132.

It is not a de Polignac number, because 23121442221401 - 2¹⁸ = 23121441959257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23121442221403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37860971 + ... + 38466816.

It is an arithmetic number, because the mean of its divisors is an integer number (1553881108104).

Almost surely, 2^{23121442221401} is an apocalyptic number.

It is an amenable number.

23121442221401 is a deficient number, since it is larger than the sum of its proper divisors (1740655508263).

23121442221401 is a wasteful number, since it uses less digits than its factorization.

23121442221401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76328080.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 23121442221401 its reverse (10412224412132), we get a palindrome (33533666633533).

The spelling of 23121442221401 in words is "twenty-three trillion, one hundred twenty-one billion, four hundred forty-two million, two hundred twenty-one thousand, four hundred one".